在根尖的结构中，生长最快的是[ ]
A．成熟区
B．伸长区
C．分生区
D．根冠
答案：B
属于肺痨肺阴亏损证的症状有
A．少气心慌
B．干咳少痰
C．口干咽燥
D．午后手足心热
E．舌尖红脉细数
Ricky was so excited _____ he couldn't _____ words. [ ]
A. that, speak some
B. because, say
C. that, say any
D. and, say some
